Today, we learned the "compound broken line statistical chart"
Drawing a statistical chart is divided into four steps: the first step is to write a title; Draw a legend; Third, mark the data; Fourth, connect the points, but with different lines.
Because I just learned, I always make some mistakes. Let me give you an example first! Judgment: the broken line statistical chart can only reflect the increase or decrease of various quantities. I think it is right, but in fact it is wrong. After my share, IL
Analysis, I am not very clear about the characteristics of the broken line statistical chart. The correct way is: the broken-line statistical chart can not only reflect the increase or decrease of various quantities, but also reflect the size of various quantities, so this judgment prompt is wrong.
Compound statistical chart is easy to learn, but it is economical and wrong to do, so when learning any knowledge, we must grasp the key points.
2. math diary
Today, the teacher taught us "the basic nature of comparison".
"The basic property of ratio" is similar to "the basic property of fraction". The two items before and after the ratio are multiplied or divided by the same number at the same time, and the ratio remains unchanged except 0. This is not groundless!
The ratio of 16: 4 is 4, and the ratio of 4: 1 is also 4. Take a closer look at the two sets of numbers. 16 to 4 is divided by 4, and 4 to 1 is divided by 4, that is to say, "the first term and the last term of 16: 4 are divided by 4 at the same time", and the ratio is still 4, so conversely, 4 to 16 is multiplied by 4, and 1 4 is also divided.
This can be seen from this example. So we come to the conclusion that the two terms before and after the ratio are multiplied or divided by the same number at the same time, except for 2 and 0, the ratio remains unchanged.
However, it should be noted that the first item and the last item must be "simultaneous". If the first item is multiplied first and the last item is multiplied again, it will not work; It must also be "the same number". If it is not the same number, one times 3 and one times 4, it will be even worse; Of course, o will be excluded!
I'm here to remind you, but friends in grade six must pay attention!
3. math diary
I have a math exam today. I did badly in the exam. I only got 89 points in the exam.
Recalling the math class, I got the test paper and found that the topic was very simple, so I did it happily. After I finished, I thought I could really do every question, so I didn't check it.
In the afternoon, the teacher handed out papers according to the exam results. I thought I would get full marks, but I never signed up. When I didn't report 100, I thought, maybe I was careless, or I made a mistake. However, when I finished 90 points without me, I began to get nervous.
The teacher finally signed up my name, with 89 points. I can't believe my ears. Carefully read the wrong question, and deduct 9 points for an application question. After careful examination, it turns out that my calculation is wrong. Plus a miscalculation, 90 points is strange!
When I got home, my mother was very angry when she knew that I failed the exam. After reading my test paper, she didn't criticize me, just analyzed the reasons for my mistakes with me. The more my mother is like this, the sadder I feel, because my mother has spent a lot of time to improve my computing ability.
This exam made me have a deeper understanding of my current situation in mathematics. I will strengthen my practice in mathematics, especially in calculation, and I will work hard.